Extra payments being deducted no RESPONSE

I returned from overseas and had my service re-instated<br> I then began receiving sms to make payment. The call centre after 45mins on the phone said I had to make a manual payment whereas I have had a debit order in pace of over 25 years<br> I visited their head office in Randburg and the p[roblem was supposedly resolved<br> A payment was made by the manager there<br> When the monthly payment was due, a double payment wsa deducted After emails and visiting Randburg nothing was done and still no response received now 3 weeks later<br> I had my bank reverse the payment then visited Randburg and had a manual payment made<br> Today another unknown payment has been deducted again<br> I NOW WANT TO KNOW WHAT IS GOING ON AND WHERE THE PAYMENTS ARE BEING CREDITED TO<br> and FOR THESE PEOPLE TO SORT THEMSELVES OUT AND PROVIDE ANSWERS